<template>
	<div>
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>分类参数</el-breadcrumb-item>
		</el-breadcrumb>
		<el-card>
			<el-alert title="注意:只允许第3级分类设置相关参数!" type="warning" :closable="false" show-icon>
			</el-alert>
			<el-row>
				<el-col :span="8">
					<span>选择商品分类：</span>
					<el-cascader :options="cateList" :props="cascaderProps" v-model="selectedKeys" clearable
						@change="handleChange">
					</el-cascader>
				</el-col>
			</el-row>
			<el-tabs v-model="activeName" @tab-click="handleTabClick">
				<el-tab-pane label="动态参数" name="many">
					<el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">
						添加参数</el-button>
					<el-table :data="manyTableData" style="width: 100%" border stripe>
						<el-table-column type="expand">
							<template v-slot="scope">
								<el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleCloseTag(i,scope.row)">{{item}}</el-tag>
								<el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue"
									ref="saveTagInputRef" size="small" @keyup.enter.native="handleInputConfirm(scope.row)"
									@blur="handleInputConfirm(scope.row)">
								</el-input>
								<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
								</el-button>

							</template>
						</el-table-column>
						<el-table-column type="index" label="#"></el-table-column>
						<el-table-column prop="attr_name" label="参数名称">
						</el-table-column>
						<el-table-column label="操作">
							<template v-slot="scope">
								<el-button type="primary" icon="el-icon-edit" size="small"
									@click="showEditDialog(scope.row.attr_id)">编辑</el-button>
								<el-button type="danger" icon="el-icon-delete" size="small"
									@click="removeParams(scope.row.attr_id)">删除</el-button>
							</template>
						</el-table-column>
					</el-table>
				</el-tab-pane>
				<el-tab-pane label="静态属性" name="only">
					<el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">
						添加属性</el-button>
					<el-table :data="onlyTableData" style="width: 100%" border stripe>
						<el-table-column type="expand">
							<template v-slot="scope">
								<el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleCloseTag(i,scope.row)">{{item}}</el-tag>
								<el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue"
									ref="saveTagInputRef" size="small" @keyup.enter.native="handleInputConfirm(scope.row)"
									@blur="handleInputConfirm(scope.row)">
								</el-input>
								<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
								</el-button>
						
							</template>
						</el-table-column>
						<el-table-column type="index" label="#"></el-table-column>
						<el-table-column prop="attr_name" label="属性名称">
						</el-table-column>
						<el-table-column label="操作">
							<template v-slot="scope">
								<el-button type="primary" icon="el-icon-edit" size="small"
									@click="showEditDialog(scope.row.attr_id)">编辑</el-button>
								<el-button type="danger" icon="el-icon-delete" size="small"
									@click="removeParams(scope.row.attr_id)">删除</el-button>
							</template>
						</el-table-column>
					</el-table>
				</el-tab-pane>
			</el-tabs>
		</el-card>

		<el-dialog :title="'添加'+titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
				<el-form-item :label="titleText" prop="attr_name">
					<el-input v-model="addForm.attr_name"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="addDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="addParams">确 定</el-button>
			</span>
		</el-dialog>

		<el-dialog :title="'修改'+titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
			<el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="100px">
				<el-form-item :label="titleText" prop="attr_name">
					<el-input v-model="editForm.attr_name"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="editParams">确 定</el-button>
			</span>
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				cateList: [],
				cascaderProps: {
					value: "cat_id",
					label: "cat_name",
					children: "children",
					expandTrigger: 'hover'
				},
				selectedKeys: [],
				activeName: 'many',
				manyTableData: [],
				onlyTableData: [],
				addDialogVisible: false,
				editDialogVisible: false,
				addForm: {
					attr_name: ''
				},
				editForm: {},
				addFormRules: {
					attr_name: [{
						required: true,
						message: '请输入参数名称',
						trigger: 'blur'
					}]
				}
			}
		},
		created() {
			this.getCateList();
		},
		methods: {
			async getCateList() {
				const {
					data: res
				} = await this.$http.get('categories');
				if (res.meta.status !== 200) return this.$message.error('获取数据失败！');
				this.cateList = res.data;
				// console.log(this.cateList);
			},
			handleChange() {
				this.getParamsData();
				
			},
			handleTabClick() {
				this.getParamsData();
			},
			async getParamsData() {
				if (this.selectedKeys.length !== 3) {
					this.manyTableData = [];
					this.onlyTableData = [];
					return this.$message.warning('只允许第3级分类设置相关参数!');}
				const {
					data: res
				} = await this.$http.get(`categories/${this.cateId}/attributes`, {
					params: {
						sel: this.activeName
					}
				});
				if (res.meta.status !== 200) return this.$message.error('获取数据失败！');
				res.data.forEach(item => {
					item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : [];
					item.inputVisible = false;
					item.inputValue = '';
				})
				console.log(res.data);
				if (this.activeName === 'many') {
					this.manyTableData = res.data;
				} else {
					this.onlyTableData = res.data;
				}
				// console.log(this.manyTableData);
			},
			addDialogClosed() {
				this.$refs.addFormRef.resetFields();
			},
			editDialogClosed() {
				this.$refs.editFormRef.resetFields();
			},
			addParams() {
				this.$refs.addFormRef.validate(async valid => {
					if (!valid) return this.$message.error('验证不通过，添加动态数据失败！');
					const {
						data: res
					} = await this.$http.post(
						`categories/${this.selectedKeys[this.selectedKeys.length - 1]}/attributes`, {
							attr_name: this.addForm.attr_name,
							attr_sel: this.activeName
						});
					if (res.meta.status !== 201) return this.$message.error('添加参数失败！');
					this.$message.success('添加参数成功！');
					this.addDialogVisible = false;
					this.getParamsData();
				})
			},
			async showEditDialog(id) {
				const {
					data: res
				} = await this.$http.get(`categories/${this.cateId}/attributes/${id}`, {
					params: {
						attr_sel: this.activeName
					}
				});
				if (res.meta.status !== 200) return this.$message.error('添加参数失败！');
				this.editForm = res.data;
				this.editDialogVisible = true;
			},
			editParams() {
				this.$refs.editFormRef.validate(async valid => {
					if (!valid) return this.$message.error('验证不通过，修改数据失败！');
					const {
						data: res
					} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, {
						attr_name: this.editForm.attr_name,
						attr_sel: this.activeName
					});
					if (res.meta.status !== 200) return this.$message.error('修改参数失败！');
					this.$message.success('修改参数成功！');
					this.editDialogVisible = false;
					this.getParamsData();
				})
			},
			removeParams(attr_id) {
				this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).then(async () => {
					const {
						data: res
					} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`);
					if (res.meta.status !== 200) return this.$message.error('删除参数失败！');
					this.$message.success('删除参数成功！');
					this.getParamsData();
				}).catch(() => {
					this.$message({
						type: 'info',
						message: '已取消删除'
					});
				});
			},
			handleClose(tag) {
				this.dynamicTags.splice(this.dynamicTags.indexOf(tag), 1);
			},

			showInput(data) {
				data.inputVisible = true;
				this.$nextTick(_ => {
				          this.$refs.saveTagInputRef.$refs.input.focus();
				        });
			},

			async handleInputConfirm(data) {
				if(data.inputValue.trim().length === 0){
					data.inputValue = '';
					data.inputVisible = false;
					return
				}
				data.attr_vals.push(data.inputValue.trim());
				data.inputValue = '';
				data.inputVisible = false;
				const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${data.attr_id}`,
				{
					attr_name:data.attr_name,
					attr_sel:data.attr_sel,
					attr_vals:data.attr_vals.join(' ')
				});
				// console.log(data.attr_sel);
				// console.log(res);
				if (res.meta.status !== 200) return this.$message.error('提交参数失败！');
				this.$message.success('提交参数成功！');
			},
			async handleCloseTag(i,data){
				data.attr_vals.splice(i,1);
				const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${data.attr_id}`,
				{
					attr_name:data.attr_name,
					attr_sel:data.attr_sel,
					attr_vals:data.attr_vals.join(' ')
				});
				// console.log(data.attr_sel);
				// console.log(res);
				if (res.meta.status !== 200) return this.$message.error('提交参数失败！');
				this.$message.success('提交参数成功！');
			}
		},
		computed: {
			isBtnDisabled() {
				if (this.selectedKeys.length === 3) return false;
				return true;
			},
			cateId() {
				return this.selectedKeys[this.selectedKeys.length - 1];
			},
			titleText() {
				if (this.activeName === "many") return '动态参数';
				return '静态属性';
			}
		}
	}
</script>

<style scoped>
	.input-new-tag {
		width: 120px;
		margin-left: 10px;
		vertical-align: bottom;
	}
</style>
